From 985680b2bf7ab656061619281663f3885a04d89c Mon Sep 17 00:00:00 2001
From: Jürgen Knödlseder <jurgen.knodlseder@irap.omp.eu>
Date: Thu, 15 Apr 2021 14:12:30 +0200
Subject: [PATCH] Correct argument of error massage

---
 cscripts/csphagen.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/cscripts/csphagen.py b/cscripts/csphagen.py
index 9ffd6f7..e39a3ca 100755
--- a/cscripts/csphagen.py
+++ b/cscripts/csphagen.py
@@ -614,7 +614,8 @@ class csphagen(ctools.csobservation):
                         msg = ' Skip because the number %d of regions' \
                               'for background estimation not overlapping ' \
                               'with the exclusion region is smaller than ' \
-                              '"bkgregmin"=%d.' % (bkg_reg.size(), self['bkgregmin'].integer())
+                              '"bkgregmin"=%d.' % \
+                              (regions.size(), self['bkgregmin'].integer())
                         self._log_string(gammalib.NORMAL, msg)
                         regions = gammalib.GSkyRegions()
 
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